Principals

Mark Sidell has been president of Gart Properties since 1999 and is a partner in all of the company’s real estate investments. He is responsible for leading the organization including an aggressive acquisition program and continued execution of niche development opportunities. Prior to joining Gart Properties Mr. Sidell was a principal with Trammell Crow Company where he enjoyed a 13 year career in the Colorado real estate market. Mark serves on the board of several Denver community agencies including the Downtown Denver Partnership, the Allied Jewish Federation of Colorado and the Jewish Community Foundation. He is also an involved member of the Young Presidents Organization, YPO and the International Council of Shopping Centers. Mark is a real estate industry veteran with more than 25 years of experience and holds an MBA in Real estate and Construction from the University of Denver and received his undergraduate degrees in Construction Management and Business Administration from Washington State University. Mark is married with two children.

Ken has been a partner at The Gart Companies since its inception in 1992. Prior to that time, he was Co-President and Chief Merchandising Officer at Gart Bros. Sporting Goods, a family-owned and operated corporation, from 1983 to 1992. At that time the company was sold, and currently operates as Sports Authority. Ken started Specialty Sports Venture, LLC (SSV) in 1994 and built it to over 140 stores and into the nation’s leading specialty ski and bicycle retailer. The company was sold to Vail Resorts in 2010.

Ken is chairman of the Board of Denver Bike Sharing (DBA B-Cycle) where he was appointed to the position by then Mayor and now Governor John Hickenlooper. Denver B-Cycle was the first major city-wide bike sharing to launch in the US. Additionally, Ken was asked by former Governor Bill Ritter to spearhead an effort to bring world-class professional cycling back to Colorado. The US Pro Cycling Challenge launched successfully in August, 2011.

Ken has held various memberships, directorships and chairmanships with the Denver Metro Chamber of Commerce, Telluride Foundation, Colorado Conservation Trust, Denver Area Council Boy Scouts of America, Denver Metro Boys & Girls Clubs and the Denver Metro Convention & Visitors Bureau. Further, he serves on numerous other non-profit boards and committees.

Ken attended Claremont Men’s College and graduated from Middlebury College and Stanford Graduate School of Business. He and his wife Rebecca have three children. Ken is an athlete, having climbed over 30 of Colorado’s 14,000-foot peaks, and is an enthusiast in the sports of skiing and cycling.

Tom has been President of The Gart Companies since 1993. His business career started at Gart Brothers Sporting Goods Company, a three generation family owned and operated corporation founded in 1927 by his grandfather. He was President and Chief Operating Officer from 1985 to 1992, when the company was sold. In 1992, he founded Gart Real Estate.

Tom is currently a Board member at The Nature Conservancy, First Western Trust Bank, Beth Nehamah Hospice, Colorado Succeeds, Shalom Park and National Jewish Hospital, where he is the Board Chair. He is a member of The World Presidents Organization (WPO). Tom graduated from Stanford University with honors in 1980 where he was Student Body Co-President. He received an MBA from Harvard University Graduate School of Business in 1984.

In addition to his community and business activities, Tom is a passionate skier and fly fisherman. He is a 4 time Ironman triathlon finisher and has run numerous marathons. Tom and his wife Margie have three children.

John graduated from Lake Forest College outside Chicago (B.A., 1984). He is active in the day-to-day operations of Gart Properties. He is a current board member and past Chair of the Board of Visit Denver, Denver’s convention and visitors bureau. He is also currently Chair of the Board of the Craig Hospital Foundation. Craig Hospital is the leading spinal cord and traumatic brain injury rehabilitation hospital in the country. John is also on the Executive Committee for the upcoming US Amateur golf tournament to be held in 2012 at Cherry Hills Country Club in Englewood, CO. John is an avid golfer, and he has completed the New York Marathon. John and his wife, Martha, have one son, Evan, a student at SMU in Dallas.